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Defense in [[Japanese mahjong]] focuses on one important concept: '''avoiding other players' hands, by not discarding winning tiles'''. Other concepts rests on not giving other players any tiles needed to call. This aspect of the game is greatly emphasized during other player(s)' [[riichi]] declarations and/or threat of high scoring hands. Regardless, it is in the best interest for players to avoid losing points directly to other players, as much as possible. Players with low "[[ron|deal in rates]]" have higher chances of winning, than those who do. | Defense in [[Japanese mahjong]] focuses on one important concept: '''avoiding other players' hands, by not discarding winning tiles'''. Other concepts rests on not giving other players any tiles needed to call. This aspect of the game is greatly emphasized during other player(s)' [[riichi]] declarations and/or threat of high scoring hands. Regardless, it is in the best interest for players to avoid losing points directly to other players, as much as possible. Players with low "[[ron|deal in rates]]" have higher chances of winning, than those who do. | ||
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Eventually, players learn the importance of minimizing point losses, especially via ron. Point losses via [[tsumo]] or [[ryuukyoku]] are minimal, and they're easily reclaimed with relatively easy winning hands. Especially in the case of tsumo, point losses are shared among all the players, rather than one bearing the brunt of the entire opposing hand's point value. In many instances, points lost rather than points gained during the game determines the outcome for a player. Of course, a player still has to produce hands in order to maintain contention. A game ending in [[yakitori]] is likely not a winning game. | Eventually, players learn the importance of minimizing point losses, especially via ron. Point losses via [[tsumo]] or [[ryuukyoku]] are minimal, and they're easily reclaimed with relatively easy winning hands. Especially in the case of tsumo, point losses are shared among all the players, rather than one bearing the brunt of the entire opposing hand's point value. In many instances, points lost rather than points gained during the game determines the outcome for a player. Of course, a player still has to produce hands in order to maintain contention. A game ending in [[yakitori]] is likely not a winning game. | ||
== Safe tiles == | == Safe tiles == | ||
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{{main|Furiten|Genbutsu}} | {{main|Furiten|Genbutsu}} | ||
The most important defense technique. [[Genbutsu]] involves tiles deemed 100% safe per the rules applied. Here, the [[furiten|furiten rule]] can be exploited. Any tile that an opponent has discarded is 100% safe against them. The temporary furiten rule makes tiles discarded on the current go-around 100% safe against players who haven't had their turn after the discard. Furiten involving riichi marks the tiles after the riichi as 100% against the riichi caller, for any tiles unclaimed tiles by the same player. | The most important defense technique. [[Genbutsu]] involves tiles deemed 100% safe per the rules applied. Here, the [[furiten|furiten rule]] can be exploited. Any tile that an opponent has discarded is 100% safe against them. The temporary furiten rule makes tiles discarded on the current go-around 100% safe against players who haven't had their turn after the discard. Furiten involving riichi marks the tiles after the riichi as 100% against the riichi caller, for any tiles unclaimed tiles by the same player. | ||
===Sakigiri=== | |||
{{main|Sakigiri}} | |||
'''Sakigiri''' is the task of discarding tiles, before they become dangerous. With each tile draw and discard, the game's conditions are constantly changing. Most of the time, players may possess winning tiles for other players in the hand. They must either be used for the hand, discarded in time, or simply kept in the hand. | |||
==Techniques to find safe tiles== | ==Techniques to find safe tiles== | ||
A number of techniques can be used to determine safe tiles. All of them utilize visible tiles from the discards, dora indicator, and the player's own hand. | |||
===Genbutsu=== | ===Genbutsu=== | ||
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===Honors=== | ===Honors=== | ||
Honor tiles are generally safe, since they are hard to wait on. Tiles that have already passed are much safer than live ones. Guest wind tiles are both safer and less damaging than yakuhai tiles. Live yakuhai should be considered fairly dangerous. When three of one type is discarded, then the fourth is guaranteed safe, because it is no longer usable in anyone's hand. | Honor tiles are generally safe, since they are hard to wait on. Tiles that have already passed are much safer than live ones. Guest wind tiles are both safer and less damaging than yakuhai tiles. Live yakuhai should be considered fairly dangerous. When three of one type is discarded, then the fourth is guaranteed safe, because it is no longer usable in anyone's hand unless it is tenpai for [[Kokushi Musou]]. | ||
===Suji=== | ===Suji=== | ||
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{{main|Suji}} | {{main|Suji}} | ||
'''Suji''' focuses on taking advantage of the furiten rule, and its application to the mahjong | '''Suji''' focuses on taking advantage of the furiten rule, and its application to the "mahjong intervals". Most good waits wait on tiles in the same suji. For example, if a player has discarded 4-pin, the 1-pin and 7-pin are safe if the opponent has a ryanmen wait. Neither is perfectly safe, however, and the 7-pin is much more dangerous than the 1-pin. This is because the 1-pin can only complete a shanpon or tanki wait, while the 7-pin can also complete a penchan or kanchan wait. A discarded 8-sou does not make the 5-sou safe, but if both 8-sou and 2-sou are discarded, the 5-sou is suji. The order of suji safety is 19>double-suji 456>28>37. | ||
On the other hand, this strategy may actually work backwards, when suji is actually used to bait players into discarding tiles that appear to be safe. Suji tiles of tiles discarded after riichi are safer for this reason, while tiles discarded right before riichi and when declaring riichi are the most dangerous. It is common to riichi discarding 6 from 246 to bait out the 3. Players also declare riichi with bad waits, and suji is useless against them. Relying only in suji to defend will result in many play-ins. Suji should be used when genbutsu tiles have ran out, or in Uchi-mawashi. | On the other hand, this strategy may actually work backwards, when suji is actually used to bait players into discarding tiles that appear to be safe. Suji tiles of tiles discarded after riichi are safer for this reason, while tiles discarded right before riichi and when declaring riichi are the most dangerous. It is common to riichi discarding 6 from 246 to bait out the 3. Players also declare riichi with bad waits, and suji is useless against them. Relying only in suji to defend will result in many play-ins. Suji should be used when genbutsu tiles have ran out, or in Uchi-mawashi. | ||
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{{main|Kabe}} | {{main|Kabe}} | ||
A tactic similar to suji that uses "walls" formed by seeing all 4 of a tile to remove the possibility of ryanmen waits. For example, if you see all 4 of 6-man, no player can have a 56-man or 67-man shape, so | A tactic similar to suji that uses "walls" formed by seeing all 4 of a tile to remove the possibility of ryanmen waits. For example, if you see all 4 of 6-man, no player can have a 56-man or 67-man shape, so ryanmen waits for 7-man and 8-man are impossible. Like suji, other waits are still possible, but note that a 68-man wait for the 7-man is also blocked, making the 7-man safer than a 4-man discard suji. Kabe safety is comparable to suji safety, and should be used in similar fashion. | ||
==The ways of defense and offense== | ==The ways of defense and offense== | ||
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'''Betaori''' focuses on discarding nothing but safe tiles. In this state, a player has completely abandoned all hope of developing a winning hand; and instead, the hand is dedicated towards avoiding any threatening hands. At times, even a player achieving a tenpai hand may need to completely break the tenpai for avoidance. The essence of betaori is to always discard the safest tile first. Suji tiles or even hell wait only honors shouldn't be discarded before any genbutsu tiles. | '''Betaori''' focuses on discarding nothing but safe tiles. In this state, a player has completely abandoned all hope of developing a winning hand; and instead, the hand is dedicated towards avoiding any threatening hands. At times, even a player achieving a tenpai hand may need to completely break the tenpai for avoidance. The essence of betaori is to always discard the safest tile first. Suji tiles or even hell wait only honors shouldn't be discarded before any genbutsu tiles. | ||
=== | ===Mawashi uchi=== | ||
''' | '''Mawashi uchi''' is a half-way style where a player aims to discard fairly safe tiles while still aiming for tenpai. Discardable tiles include honors, suji tiles and no-chance kabe tiles. From this state a player may fall back to betaori upon drawing dangerous tiles, or attack when reaching tenpai. This style is not recommended for beginners, and should be used rarely. It is appropriate to use when in a good shape iishanten for a strong hand. | ||
===Kanzen shinko=== | ===Kanzen shinko=== | ||
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* [http://www.osamuko.com/basic-defense-techniques-in-mahjong/ Osamuko.com] | * [http://www.osamuko.com/basic-defense-techniques-in-mahjong/ Osamuko.com] | ||
: Basic Defense Techniques in Mahjong | : Basic Defense Techniques in Mahjong | ||
* [http://osamuko.com/umaikeiki-defense-guide-betaori-and-suji/ Betaori and Suji] | |||
: UmaiKeiki’s defense guide — Betaori and Suji | |||
{{Navbox strategy}} | {{Navbox strategy}} | ||
[[Category:Strategy]] | [[Category:Strategy]] | ||